⚡ Bolt: Optimize HTML entity unescaping in markdown renderer

[piyyy314]

⚡ Bolt: Optimize HTML entity unescaping in markdown renderer

💡 What:

Optimized the unescape function in src/cli/commands/help/markdown-renderer.ts by pre-compiling a unified regular expression (HTML_UNESCAPE_RE) at module load time and replacing the 7 individual RegExp object allocations and 7 separate string scans per renderMarkdown call with a single-pass regex replace against a lookup map.

🎯 Why:

Previously, unescape performed Object.entries(htmlUnescapes).forEach(...) on every rendered markdown document/string, instantiating new RegExp(escapedChar, 'g') for each key and scanning the input string 7 times sequentially.

📊 Impact:

• Reduces string passes from 7 passes to 1 pass ($O(N)$ string traversal).
• Eliminates 7 dynamic RegExp object allocations per renderMarkdown() invocation.

🔬 Measurement & Verification:

• Added unit tests in test/jest/unit/cli/commands/help/markdown-renderer.spec.ts.
• Verified tests pass with npx jest test/jest/unit/cli/commands/help/markdown-renderer.spec.ts.
• Verified npm run lint:js passes with zero warnings/errors.

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PR created automatically by Jules for task 18162041058769781582 started by @piyyy314

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[piyyy314]

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